# S9012

**hongjiacheng** · Bipolar (BJT) · SOT-23

S9012 from hongjiacheng, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Base | input | Base terminal of PNP transistor; maximum emitter-base voltage VEBO = -5.0V; base-emitter saturation voltage VBE(sat) = -1.2V at IC = -500mA, IB = -50mA. |
| 2 | Emitter | passive | Emitter terminal of PNP transistor; maximum emitter-base voltage VEBO = -5.0V. |
| 3 | Collector | output | Collector terminal of PNP transistor; maximum collector-emitter voltage VCEO = -25V; maximum collector-base voltage VCBO = -40V; maximum collector current IC = -0.5A; maximum power dissipation PC = 300mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `S9012`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `s9012-etched.step` / `s9012-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `s9012.step` / `s9012.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [hongjiacheng datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8564879422446080000) (3 pp, sha256 `db8e9645e8a01f83`, retrieved 2026-09-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/s9012-datasheet.pdf)